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Chapter -3

Equilibrium of forces ( Beam, frame)

1) The friction experienced by body when it is in motion.A) Limiting friction B)Dynamic friction C)both a & b D)None of these.

2) The angle of inclined plane at which body just begins to slide down , the plane is calledhelixangle.

A)True B) False C) Cant say D) all of above

3) The minimum force required to slide a body of weight W an a rough horizontal plane isA) W sin B) W cos C) W tan D) W cosec

4) A body will begin to move down an inclined plane if the angle of friction than angle ofinclination of the plane.

A) less B) greater C) equal to D) cant say5) A body of weight W is required to move up on rough inclined plane whose angle of inclination

with horizontal is . The effort applied parallel to the plane is given by

A) B) C) D)6) Couth of friction is the ration of limiting friction to the normal reaction between the two bodies

A) Agree B) Disagree C)cant say D) none of these7) In a simple supported been carrying triangular load the reaction can t be vertical

A) Agree B)Disagree C)cant say D)none of these8) The reaction at the roller supported end of a beam is always

A) Vertical B) Horizontal C)cant say D)none of above9) If the reaction of a beam, at one of its support is the resultant of horizontal vocation forces then

it is a

A) Simply supported end B) roller supported end C) hinged end D) none of these .10)For simple support reaction will be given always normal to supporting surface.

A) Agree B) Disagree C) cant say D)none of these11)A couple action at the midpoint of a simple supported beam has some horizontal and vertical

components .

A) Agree B) Disagree C) cant say D) none of these12)A press hinged at in out supports on rollers at the other is subjected to horizontal load only.

Its reaction at hinged end will be

A)

Horizontal B) vertical C) Resultant of horizontal and vertical D) None of these.13)Couple can be balanced by the force

A) Agree B) Disagree C) cant say D) None of these.14)Couple can be balanced by another couple of same magnified and same since of rotation.

A) Agree B) Disagree C) cant say D) None of these15)Couple can be balanced by another couple of same magnified and opposite sance of refection.

A) Agree B) Disagree C) cant say D) None of these.

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16)Beam is foxed at one end and other and is free then beam is called as.A) Cantilever B) Continuous beam C) Over hang beam D) Simply supported beam

17) Beam continuous over more than two supports is called as.A) Caufilever beam B) Overhang beam C) Simple supported beam D) None of these

18)Beam is continuous over the supports a its one end is free it is called as.A) Can failover beam B) Overhang beam C) Simple supported beam D) None of these

19)Load which is distributed uniformly on the beam is called asA) U. v. l. B) U. D. L. C) Point load D) None of these

20)Load which is varying uniformly on the beam is called asA) U. V. L. B) U. d. l. C) Point load D) None of these

21)V. D. L. will act always----------------- of its entire lengthA) Halt B) One third C) two third D) cant say

22)U. V. L. equivalent load always act at a distance of --------------from the point at which two sidesof triangle are Ier to each other

A) Half B) one third C) two third D) cant say23)Moment of couple is independent of moment center.

A) Agree B) Disagree C)cantsay D) None of these24)Ettect at couple remains unchanged it we rotate couple in any angle in its plane..

A) Agree B) disagree C) Cant say D) None of these25)Ettect of a force on a body remains unaltered if we add or subs tract any system which is in

equilibrium this principle is

A) Transmissibility B) Superposition C) cant say D) none of these26)The force system can be converted in to force and couple sustem.

A) Agree B) disagree C) cant say D) none of these27)Two systems are equipollent only when

A) B) C) D)28)It two system of forces under consideration it can be reduced to the same force couple system

at a giver point then it is called as

A) Equipollent system B) equilibrium C) both a&b D) None of these29)When we shift force any where on body it is associated with force and couple system at new

position

A) Agree B) disagree C) cant say D) None of these30)It we shift 5KN at B then at B

A) Only force 5KN will actB) Force of 5kN & couple of 25 in autiC)D) None of these

31)Moment of couple is nothing but product of one force and ler distance from other forceA) Agree B) disagree C) cant say D) none of these

32)For compound beam if common roller support is prefect then reaction normal to supportingsurface equal & opposite to both the beams.

A) Agree B) disagree C) cant say D) none of these

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33)For compound beam more than one beam are compounded or connected with each other byroller or hinge.

A) Agree B) disagree C) cant say D) none of the34)For compound beam it common hinge is present between two beams the n reaching will be

common to both beams equal and opposite

A) Agree b) disagree C) cant say D) None of these35). Here U V L of intensity zero at one end and-------------- intensity at other end.

A) 5 KN/m B) 10 KN/m C) 20 KN/m 25 KN/m

36)Here u d l of intensity ----------is actingA) 5 KN/m B) 10 KN/m C) 15 KN/m D) none of thes e

37)As shown in fig equivalent load of u. d. l. isA) 25KN B) 50KN C) 100KN D) 15KN

38)As shown in fig equivalent load of u. v. l. isA) 25KN B) 50KN C) 100KN D) 15Kn

39)Moment center is the point about which we take the moment of forces.A) Agree B) disagree C) cant say D) none of these

40)Fixed support is the strongest support as far as beams in RCC construction are consideredA) Agree B) disagree C) cant say D) none of these.

41)In case of - bridges in case of beams one end is hinged a other roller supported.A) Agree B) disagree C) cant say D) none of these

42)Ier distance between two equal a opposite forces developing couple is called as leaver arm prarm of couple.

B) Agree B) disagree C) cant say D) none of these43)A man of 110 N holding weight of 10 N as shown in fig. What will be force exerted at B.

A) 100 N B) 120 N C) 130 N D) 90 N

44)As shown in fig. force or tension developed in string as shown in fig.A) 10 N B) 20 N C) 5 N D) 25 N

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45) As shown in fig. horizontal court peanut of reaction at C& B will beA) 10 KN B) Zero C) 15 KN D) 25 KNB)

46)Beam is horizontal structural member on which load acts in transverse direction.A) Agree B) disagree C) cant say D) none of these

47)Strict is inclined structural members used in construct ionA) Agree B) disagree C) cant say D) none of these

48)As shown in fig. resultant force & couple respectivelyA B) C) D)

49) Weight of body will act always in vertical downward dirnA) Agree B) disagree C) cant say D) none of these

50) If in case of co-planer noncom current forces acting on beam in equal & unbeknown are morethan three, then beam is called statically indeterminate beam.

A) Agree B) disagree C) cant say D) none of these.